The act of coughing and unexpectedly releasing 1-2 day old food that has collected in the back of your throat, perhaps in the esophagus, and formed into a hard ball.
Mattie coughed and surprised Becky by dunching onto her shoulder. "disgusting", Becky replied.
pronounced: dunch.
The exact meaning of the word is ambiguous; however, the context in which the word is used allows limitless connotations. Also, the strength of the descriptive words can imply the urgency of the word.
Neutral: "Man, you're such a dunch."
Positive: "Man, let's dunch all night long!"
Negative: "Man, you are a fucking dunch."
Very negative: "Man, I didn't want to tell you like this, but for the last 3 months you've been a total fuckin dunch. If there was a legal way for me to castrate you, you bet your ass I would. See you Friday."
{dA rather extreme form of Ass Spelunking occurring after lunch but before dinner. The extremeness being that it often involves shit covered orifices and brown mouth hugs. This can occur between two men/two women/man & woman. If more than two parties are involved it becomes a Group Dunching.
I dunched the shit outta that sorority chick last night!
Peter got all mad after we decided to dunch and I accidentally got some poo into his eye which gave him pink eye.